Jennifer Aniston insists she "doesn't care" that her ex-husband Brad Pitt is engaged to marry Angelina Jolie, claiming she is perfectly happy with her new beau Justin Theroux.Reports last week had claimed Aniston had given the engagement her blessing, but the former Friends actress genuinely "doesn't care" that Pitt popped the question, according to a friend who spoke with E! News, adding, "She really doesn't. She's happy with Justin (Theroux). She'll probably marry him.She's moved on. People don't want to believe it, but she has". Aniston first heard the news while she was at home with Theroux, and the pal added, "She was happy and hanging out with her man". Pitt and Jolie - otherwise known as Brangelina - were rumored to have got together while filming the movie Mr & Mrs Smith in 2004, while Brad was still married to Aniston. The couple now has six children together, Maddox, Pax, Zahara, Shiloh, Knox and Vivienne. A representative for Brad confirmed the engagement on Friday (April 13, 2012), explaining that the gesture "is a promise for the future and their kids are very happy".